Safety razor



Cil

Patented Apr. 14, 1936 UNiTED STATES' rT-ENT vries Segal Founders Corporation, a corporation of New York New York, N. Y.,

Application January as, 193s, serial un. 653,961 rz' c (o1. si)

This invention relates to a new and improved type of safety razor and particularly to such a device of the so-called one piece variety", and

additionally embodies a new and improved blade clamping means for universal adaptation with respect to double edged safety razors.

It is an object of the invention to provide an article of this character in which a double edged blade is held under the stress of a triple hex.

It is a further object to provide aranci' of this type in which the tendency oi the parts to jam is overcome and in which the ejection of the cap and stem members is semi-autotic.

Still another object is that of providing a razor capable of extremely fine adjustment so-thatl a correct shaving edge is always obtainable.

With these and other objects in mind, refer ence is had to the attached sheet of t in which:

Fig. 1 is a side elevation in cross-section of one form of the razor in closed position;

Fig. 2 is a side elevation in cross-section oi the same razor in open position; f

Fig. 3 is an enlarged cross-section oi the head of the razor shown in Fig. l and taken along the lines 3 3 of said figure;

Fig. 4 is a plan view showi the y ..fof the razor illustrated in the foregoing es wi an improved type of blade in position thereon;

Fig. 5 is a side elevation oi the headportion of a slightly diderent ma oi the invention; and

Fig. o is a similar view oi a still further n bodiment thereof.

, With particular reference to Eig i throh d,

, a safety razor having a i :of die portion i is pro vided with a guard member 2 having the ai teeth t on the side edges thereof. upper surface oi this guard is formed with a blade positioning abutment d which has a cent recess i5 extending in substantially oval shape over a large portion of said abutment. with the guard is a clamping plate or cap member t having an abutment accocdating recess i I located ateach end thereof. Cooperating with the recess in the guard is a projection d which is carried by the undersurface of the cap and which carries t its central point a pivot t. Coupled to this pivot by means of a pin it is a stem member it, while encircling the latter is a sleeve i2.

The stem and sleeve members extend through` l a hole i3 through the guard to the interior of the handle where the lower end of the sleeve carries a shoulder portion I 4 against which a spring it presses. The stem Ii has the usual pin i6 at A when the stem is at its fully Cooperating y its lower end which cooperates with the spiral groove il of an actuating sleeve it as well as the longitudinally extending groove I9 of the second actuating sleeve 20. This latter'groove has a' tangentially extending upper portion 2| while the 5 sleeve also is screw threaded at its lower mrtion as at 22. Cooperating with the screw threads is a cover sleeve 23 which simply gives the handle a iinished appearance and maintains the pin in its position in they slot. actuating sleeve i8 has Ja' nange 2d which rests against the shoulder 25 of the cover sleeve and below the ange is a screw threaded, extended portion it to which is secured the actuating knob 2l. Between the latter and the cover sleeve is 1g placed a springwasher 2t which maintains the comming action against the pin it. inasmuch as 2@ the path of travel of the iatter is limited by the slot i@ to longitudinal movementfthe pin travels along this latter slot, with it the stein it and the cap or clping plate t. its this stem and cap rise, the spring it, pressing against the g5 shoulder it oi the sleeve, causes the latter to al rise until it is projected toits full length. the pin it reaches the tangentally exteng pdrtion of the slot it at 2 i this new path of travel oi the pin imparts to the stem d cap members 30 a twisting, as well as new, movement, so or,

v projected position it has ted through a @0 angle, yin; the clamping plate with it. The sleeve has held the clamping plate in ,a horizontal position duri g5- the projection of the stem due to the fact that it encircles the point of pivot of the Batter with respect to the former, but inasmuch as the' stem is of greater length than the sleeve and projects to a greater extent than the se, the clamping go plate is allowed to pivot ywhen the stern is fully projected. it will thus assume a tiited position such as sho in 2, at right angles to its normal closed position. in order to close the lThe lower end of the, 1o

approximate the ideal condition for shaving purposes. As shown in Fig; 4, the central blade opening 30 conforms generally to the shape of ythe guard recess 5 although it is slightly smaller than the latter and overlies the edges thereof. At the ends of the blade opening 3|) are transversely extending slotted portions 30a which allow the longitudinally extending edges of the blade opening 30 to be ilexed downwardly into the guard recess when the projection 8 is brought into contact with them. The blade thus assumes a shaving position in which the ends of the blade are curved from cutting edge to cutting edge, but the entire'central portion of the blade through an area co-extensive with the length of the opening 30 is subjected to curvature from cutting edge to central opening at each side of the latter, thus producing additional stress on this portion of the blade. Without the provision of the transversely extendingend portions, the edges of the central blade opening could not be subjected to a downward pressure without resulting in a buckling A and cracking of the blade.

The longitudinally extending edges of the blade opening 30 are not parallel with the cutting edges of the blade so that as a result the distance between the cutting edges and the edgexswofwthe central opening is shorter in the"''tral portion'and gradually becomes greater toward the ends of the blade opening. When the blade is subjected to clamping pressure the greatest amount of tension and stress will be set up in the center of the blade, and will gradually decrease toward the ends of the same. It is, ,of course, apparent that any shape of guard recess and blade opening might be used as long as the distance between the cutting edges and the edges of the central opening is shortest in the center of the blade, gradually increasing toward both ends of the central opening. Transversely extending slots at the end portions of the central opening might also be disposed obliquely to the cutting edges rather than at right angles thereto, as illustrated, without in the least modifying the result obtained.

It will be noted that the blade is subjected, to three distinct flexes, the first being from cutting edge to cutting edge, as determined by the convex and concave complementary surfaces of the guard and clamping plate, and the other two being from cutting edgg to center and being caused by the cap projection and guard recess as just described.

Turning now to Fig. 5, we have a razor having a handle portion 3l, carrying a guard 32, and having tooth members 33 on each edge thereof. This guard has a blade positioning abutment 34 formed with a central recess 35. Cooperating 'with the guard is a clamping plate 36 having a projection 3'!v which cooperates with the guard recess. At each end of this projection are lug members 38 which, in turn, fit into complementary recesses 39 in the guard. These projections serve to more readily center and position the blade when the razor is in a semi-opened condition such as is desirable during a cleaning or washing of the same. As in the case of the former-embodiment, the clamping plate is pivoted at 40 to a stem which is encircled by a sleeve member 4|, and in other respects, operates in the same manner as has heretofore been pointed out.

In Fig. 6, a handle 42, carrying a guard 43 with tooth members 44, is formed with a blade positioning projection 45. A cap 46 cooperates therewith and is formed with a projection 41 which' cooperates with the abutment recess 48 of the guard. Blade positioning projections 49 are carried by the clamping plate and, as described in connection with Fig. 5, these projections serve to more securely position the blade when the razor is in semi-closed position. The clamping plate is pivoted at 50 in the conventional manner to a stem which cooperates with actuating mechanism located in the handle and a sleeve 5| encircles the stem so as to maintain the cap in a horizontal position until the stem has been fully projected.

It is apparent that the particular type of clamping action herein described is subject to use without any modification in safety razors of the so-called three piece variety. It is applicants intention that it may be so used.

Likewise, many other changes in construction and rearrangement of the parts might be resorted to without in the least departing from the spirit of the invention herein described.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An article of the character described including, in combination, a guard member, a handle secured thereto,` a stem slidably disposed within said handle, means for projecting and retracting the same, a clamping plate pivotally secured to the upper end of said stem, and a sleevenormally encircling the latter to render said pivot inoperative.

2. A safety razor including in combination, a guard, a handle secured thereto, a stem slidably disposed within said handle, means for projecting and retracting said stem with respect thereto, a clamping plate pivotally secured to the upper end of said stem, a sleeve encircling said stem and normally rendering said pivot inopera-J tive, and means for limiting the projection of said sleeve to a lesser distance than that of said stem, whereby said pivot is rendered operative.

3. An article of the character described including, in combination, a guard, a handle associated therewith, a stem slidably disposed within said handle, means for projecting and retracting the same with respect thereto, a clamping plate pivotally canled by the upper end of said stem, a sleeve encircling said stem and normally rendering said pivot inoperative, and a spring disposed within said handle and normally urging said sleeve to follow said stem as the latter is projected.

4. A safety razor including, in combination, a guard, a handle associated therewith, a stem slidably disposed within said handle, means for proy sleeve and handle having complementary shoulder portions which arrest the following motion f of the former before the stem has reached its extended limit, whereby said pivot is again rendered operative.

5. As an article of manufacture, a safety razor $085518() central portion thereof, a projection carried by ul'ormed with a central aperture of an area less than that of said recess, slots also formed m the blade and extending at angles to the longitudinal axis thereof, said slots being adjacent the longitudinal ends of said aperture whereby the edges of said blade adjacent said centralaperture are flexed downwardly by said projection in the direction of said recess and the blade is caused thereby to assume a double ex throughout the central portion of the blade whereas the end portions of the blade assume a single transuninterrupted and oval opening f n.

' verse dex.

6. A safety razor comprising in combination, a guard, a blade positioning abutment formed on said guard, a recess located centrally of said abutment, said abutment terminating short of the longitudinal limits of said guard, a clamping plate for coomration with said d and carrying a projection complementary to said recess and for association therewith, .the longitudinal extremities of said clamping plate and guard presenting concave and convex surfaces, and a blade for use in said razor and having a central aperture, the edges of which are adapted to overlie said d recess, and transversely extending slot portions at the ends of said aperture whereby the edges of said y'blade adjacent said aperture are /nexed4 downwardly by said clamping plate projection so as to give a double ex to the central portion or the blade, whereasvthe end portions of the be assume a single transverse dex. 'Y'

7. A normally iiat safety rr ble comprising a'ilexible y having opposite cutting edge portions, said body being formed with a centrally A l ating short oi its ends and of a width such as to aoco date a-razor portion which is to bear alnst the faces or the blade adjacent said ope and to extend into the latter, said blade @am i being formed with slots extending at an angle to its longitu .i axis and meg into such opening at points adjacent the ends thereof, whereby the blade portions at opte sides oi said may each be subjected to independent, trverse exing stresses to assume positions denning of circles having different centers. the blade portions beyond said slots being pted to be tr versely flexed to assume si s. e

8. A razor blade including at tmf having its longitudinal side edges toed to provide cutting edge portions, said dy he additionally formed with an ope termiting short of its end edges and with slots extending arly with respect to the longitudinal axis of said blade, such slots merging into such blade opening at points acent the of the latter, the width of the tf1-wi w increasing from points adjacent such slots to s i. substtnuy intermediate the blade ends, at t point being at least equal to the width of the ble portion between the 11 ee and the out whereby such ope may accoodate l end of a abutmentzwhich is to bear ngt one of the ble faces solely acent' such opening, the blade at points between such slots, being of such character that it may e. d e a double f 1*: 1

verse dex, the slots d if fe; end son for said tenen nexfblade, in which only single transverse ilexure may occur. .u

9. A normally nat safety razor blade comprising a :dexible body having opposite cutting edge portions, said body being formed with a centrally f uninterrupted and oval opening terminating short to provide cutting edge portions, said body being additionally formed with an opening terminating short of its end edges and with slots extending angularly with respect .te the longitudinal axis of said blade, such slots merging into such blade openingat points adjacent the end of the latter, the width of the opening increasing from points adjacent such slots to a point substantially intermediate the blade ends, and at that pointA being at least equal to the width of the blade ion between the opening edge and the cutting edge, the slots 'defining end zones for said blade, in which only single transverse exure may occur.

1l. A razor including a clamping plate and a guard plate, both of such plates being transversely curved and .being adapted topreceive between them a blade to be transversely flexed, means for drawing said plates towards each other, a domed abutment extending from one plate and terminating short of theend's thereof, and the second of said plates being formed with a recess into which such abutment may extend.

l2. A razor including a, clamping plate and a.

guard plate, both of such plates being transversely curved and being adapted to receive between them a blade to/be transversely v-flexed, means tor drawing said plates ltowards each other, a domed abutment extending from one plate and terminating short of the ends thereof, and the second oi said plates being formed with a recess into which such abutment may extend, such abutment being of greatest width at a point substantially centrally of the plate with which it is associated.

13. A razor including a clamping plate and a guard plate, both of such plates being transversely curved and being adapted to receive between them a blade to be transversely iiexed, means for drawing said plates towards each other, a domed abutment extending from one plate and terminating short of the ends thereof, and the second of said plates being formed with a recess into which such abutment may extend, such abutment being of greatest width at a point substantially centrally oi the plate with which it is associated and presenting reduced end portions.

14. A razor including a guard plate and a Acooperating clamping plate, means for moving such plates` towards each other, both of such plates presenting transversely curved surfaces, an abutment extending from one of such plates and 'teating shortof the end thereof, said abutnient presenting reduced end portions and in- I ible body having its longitudinal side edges formed said abutment and blade portions depressed thereby.

15. A razor including a guard plate, a clamping plate', means for drawingv said plates towards eac-h other, said plates presenting adjacent their end portions surfaces cooperative with an interposed blade to transversely flex the same through a single arc, and means terminating short of the end portions of such plates and extending from one of the same for double flexing the central area of a blade. a

16. A safety razor including a guard plate,'a clampingA plate, meansvfor drawing said plates towards each other, said plates being adapted to receive between them a transversely exible blade' presentingside cutting edges, `said plates presenting adjacent their end portions blade contacting surfaces or single arc configuration whereby, as said plates are moved towards each other, said blade will have its end portions transversely flexed through single arcs, its cutting edges being operatively disposed with respect to the adjacent plate edges, and means associated with one of said plates and cooperating with said blade during the movement of said plates toward each other to subject the central area of said blade to relatively great stress.

17. A safety razor including a clamping plate and a guard plate cooperative to transversely flex and subject to a single stress a blade interposed therebetween, and means associated with one of said plates and co-acting with said blade to subject the same to a compound stress adjacent 

